Electric warmer



FIG. 1 is a perspective view of an electric warmer showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left end view thereof;

FIG. 5 is a right end view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a rear perspective view thereof.

The broken lines in the drawings depict portions of the electric warmer that form no part of the claimed design. 

CLAIM The ornamental design for an electric warmer, as shown and described. 